Online users who have been taken to survey websites, claiming that they have been randomly selected to receive a free Samsung Galaxy S9 for being a loyal Google user, are asked not to follow the instructions in the survey. This is because the fake survey is a scam created by online scammers and not Google.
The "Loyal Google Free Samsung Galaxy S9" Scam

Dear user, congratulations!
We want to thank you for being a loyal Google [Country] user! Your IP address [] has been randomly selected to receive a FREE Samsung Galaxy S9.
From time to time we select a handful of Google users to give them the opportunity to receive valuable gifts from our partners and sponsors. This is our way of thanking you for choosing Google as your preferred search engine.
Today is your lucky day! You are one of the 10 randomly selected users who will receive this gift.
To receive your gift, you simply have to complete our short and anonymous survey. But hurry! There are only a few gifts available today!
How satisfied are you with Google?
Very Satisfied Satisfied Unsatisfied
search-engine.today-rewards.stream
The aim of the scammers is to trick their potential victims into sending them their personal information by claiming they will receive a free Samsung Galaxy S9 after completing their fake survey.
Online users may also be sent to malicious websites that will infect their computers or mobile devices with viruses and malware. And, they may also be taken to spam websites that trick them into purchasing unwanted services and products.